• Brihaspati is supposed to be the founder of the Charvaka School of Philosophy.

• It finds mention in the Vedas and Brihadaranyka Upanishad. Thus, it is supposed to be the earliest in the growth of the philosophical knowledge. It holds that knowledge is the product of the combination of four elements which leaves no trace after death.

• Charvaka philosophy deals with the materialistic philosophy. It is also known as the Lokayata Philosophy – the philosophy of the masses.

• According to Charvaka, there is no other world. Hence, death is the end of the humans and pleasure the ultimate object in life. Charvaka recognises no existence other than this material world.

• Since God, soul and heaven cannot be perceived, they are not recognised by the Charvakas. Out of the five elements, earth, water, fire, air and ether, the Charvakas do not recognise ether, as it is not known through perception. The whole universe, according to them, is thus consisted of four elements.

• Except for the Charvaka School, realisation of soul has been the common goal of all philosophical schools of India.